@book{140082,
	author = {Rousseau, Jean-Jacques and Halperín Donghi, Leticia,},
	title = {El contrato social },
	publisher = {Losada . Océano,},
	year = {2005},
	series = {Biblioteca Clásica Contemporánea},
	address = {México :},
	edition = {1a ed.}
}